PROCESS FOR CONTROLLING ALLOY FRACTIONATION

Disclosed is a process for treating particles of selenium alloy to reduce fractionation when the particles are subsequently vacuum evaporated onto a substrate which comprises (1) heating particles of an alloy of selenium and an alloying component selected from the group consisting of tellurium, arse...

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Bibliographische Detailangaben
Hauptverfasser:	ZUKOSKI, PAUL F, KOWALCZYK, LAWRENCE E, BADESHA, SANTOKH S, LEES, BARRY A, HORDON, MONROE J, STERLING, STEVEN M, LAFORCE, ROGER W, ELDER, FRED A
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ALLOYS CASTING CHEMICAL SURFACE TREATMENT CHEMISTRY CINEMATOGRAPHY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL COMPOUNDS THEREOF DIFFUSION TREATMENT OF METALLIC MATERIAL ELECTROGRAPHY ELECTROPHOTOGRAPHY FERROUS OR NON-FERROUS ALLOYS HOLOGRAPHY INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OFSOLID INORGANIC COMPOUNDS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL INORGANIC CHEMISTRY MAGNETOGRAPHY MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY NON-METALLIC ELEMENTS PERFORMING OPERATIONS PHOTOGRAPHY PHYSICS POWDER METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	Disclosed is a process for treating particles of selenium alloy to reduce fractionation when the particles are subsequently vacuum evaporated onto a substrate which comprises (1) heating particles of an alloy of selenium and an alloying component selected from the group consisting of tellurium, arsenic, and mixtures thereof while said particles are exposed to oxygen; (2) exposing the particles to water vapor; and (3) subjecting the particles previously exposed to oxygen and water vapor to a vacuum. Also disclosed is a process which comprises (1) providing particles of an alloy of selenium and an alloying component selected from the group consisting of tellurium, arsenic, and mixtures thereof; (2) forming selenium oxide on the surfaces of the particles; (3) converting the selenium oxide on the particle surfaces to selenious acid; and (4) removing the selenious acid from the particle surfaces.